The subject of this article originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.
The Carnivorous plant was a enemy in The Hobbit Game. These plants appear in the Roast Mutton and more frequently in the Flies and Spiders level in Mirkwood. The plants appear to be blind, and only detect Bilbo when he makes fast movement toward them. Once detected, they snap at Bilbo and do substantial amounts of damage. You can sneak past them or avoid them completely.